Pressure ulcers (also known as pressure sores or bedsores) are injuries to the skin and underlying tissue, primarily caused by prolonged pressure on the skin.

They can happen to anyone, but usually affect people confined to bed or who sit in a chair or wheelchair for long periods of time.

Pressure ulcers can affect any part of the body that’s put under pressure. They’re most common on bony parts of the body, such as the heels, elbows, hips and base of the spine.

They often develop gradually, but can sometimes form in a few hours.